Class StandardReflectionParameterNameDiscoverer

java.lang.Object
org.springframework.core.StandardReflectionParameterNameDiscoverer
All Implemented Interfaces:
ParameterNameDiscoverer

public class StandardReflectionParameterNameDiscoverer extends Object implements ParameterNameDiscoverer
ParameterNameDiscoverer implementation which uses JDK 8's reflection facilities for introspecting parameter names (based on the "-parameters" compiler flag).

This is a key element of DefaultParameterNameDiscoverer where it is being combined with KotlinReflectionParameterNameDiscoverer if Kotlin is present.

Since:
4.0
Author:
Juergen Hoeller
See Also:
  • Constructor Details

    • StandardReflectionParameterNameDiscoverer

      public StandardReflectionParameterNameDiscoverer()
  • Method Details

    • getParameterNames

      @Nullable public String[] getParameterNames(Method method)
      Description copied from interface: ParameterNameDiscoverer
      Return parameter names for a method, or null if they cannot be determined.

      Individual entries in the array may be null if parameter names are only available for some parameters of the given method but not for others. However, it is recommended to use stub parameter names instead wherever feasible.

      Specified by:
      getParameterNames in interface ParameterNameDiscoverer
      Parameters:
      method - the method to find parameter names for
      Returns:
      an array of parameter names if the names can be resolved, or null if they cannot
    • getParameterNames

      @Nullable public String[] getParameterNames(Constructor<?> ctor)
      Description copied from interface: ParameterNameDiscoverer
      Return parameter names for a constructor, or null if they cannot be determined.

      Individual entries in the array may be null if parameter names are only available for some parameters of the given constructor but not for others. However, it is recommended to use stub parameter names instead wherever feasible.

      Specified by:
      getParameterNames in interface ParameterNameDiscoverer
      Parameters:
      ctor - the constructor to find parameter names for
      Returns:
      an array of parameter names if the names can be resolved, or null if they cannot